At the end of the 1940s / early 1950s, a number of large regional television transmitters were built to extend the BBC's television service across the UK. As each region used a different frequency, receiver manufacturers produced a different version

Sony 'Stowaway' stereo cassette-recorder, 1980, model TCS-300. This was one of the earliest cassette players intended to be used while on the move. The small size was made possible by omitting a loudspeaker, listening being via headphones. The equipm